Key-transfer mechanism.



W. E. ELLIOTT.

KEY TRANSFER MECHANISM.

APPLICATION FILED SEPT. 11,1915.

1., 175,623 Patented Mar. 14, 1916.

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W. E. ELLIOTT.

KEY TRANSFER MECHANISM.

APPLICATION FILED SEPT. 17. ISIS.

1 1 75,623 Pa tented Mar. 14, 1916.

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KEY-TRANSFER MECHANISM.

Specification of Letters Patent.

Patented Mar. 14, 1916.

Original application filed March 8, 1915, Serial No. 12,907. Divided and this application filed September To all whom it may concern.

Be it known that 1, WILLIAM E. ELLIOTT, a citizen of the United States of America, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented certain new and useful Improvements in Key-Transfer Mechanism; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to a key transfer mechanism by means of which a key is transferred from outside a casing containing controlling mechanism for automatically locking a machine against operation after the completion of a predetermined number of cycles of operations by the machine.

The present invention is 'a division from my copending application, Ser. No. 12,907, filed MarchS, 1915. In said application the mechanism for controlling the operation of the machine is fully disclosed and in this application only such parts thereof as are necessary for the understanding of the present invention relative to the key transfer mechanism is shown.

It is the main object and purpose of my invention to provide a key transfer mecha nism with new and useful features of construction and operation which will insure against the use of any but specially constructed keys, guarding against the use of fraudulent or counterfeit keys.

Subsidiary to this primary object the invention has for its objects the production of various novel features of construction serving to permit the entrance of the key into the casing and transfer by novel mechanism to an operating plug which is designed to carry the key into operative association with the controlling mechanism to thereby unlock it to permit another series of cycles of operations.

To these ends I have constructed the embodiment of my invention disclosed in the accompanying drawings, in which:

Figure l is a front elevation of the casing inclosing the controlling mechanism and transfer device. Fig. 2' is a similar elevation with the outer removable plate of the casing with the transferdevice removed. Fig. 3 shows in front elevation and in section an enlarged detail of the key. Fig. 4

Serial No. 51,181.

shows also in front elevation and in transverse section a detail of an intermediate member normally between the inner and outer plates of the casing. Fig. 6 is an enlarged sectional detail view taken through a key and adjacent parts in the operation of transferring the key from the receiving opening in the casing to the operating plug. Fig. 7 is a horizontal sectional View taken through the casing and illustrating the key in the plug in the operation of unlocking the mechanism. Fig. 8 is a similar view illustrating the transfer of the key from the transfer disk to the plug; and Fig. 9 is an elevation -of the plug.

Like reference characters refer to like parts throughout the several views of the drawings.

The casing for containing the mechanism indicated at 1 has an open front side covered by a plate 2 on which the controlling mechanism forming the subject matter of my previous application is mounted. A sealing plate 3 is placed over the cover plate 2 and has a plurality of bosses 4: formed thereon through which screws or other suitable connecting devices pass to attach the plate in position, these bosses being adapted to receive seals 5 for sealing the plate against unauthorized removal. A reciprocating rod 6 passes through the casing and is operatively associated with the machine which is to be controlled by the controlling mechanism. A dog 7 is located adjacent the rod and is normally actuated away from the rod occupying the position shown in Fig. 7.

An irregularly shaped member 8 pivotally 'mounted in the casing and having spaced apart arms 9 and 10 controls the position of the dog 7 and when free to do so the arm 9 bears against the dog 7 forcing it against the reciprocating rod 6 and into a notch thereof, thereby stopping the machine with which the rod 6 is associated, from opera tion. This much of the mechanism is disclosed in the present application merely to show its connection with the structure which forms the subject matter of the present invention and it is fully described in detail in the application previously noted, from which this invention is a division. A plug 11 having an inner end 11 substantially rectangular in cross section, and an outer end 11 circular in cross section, is mounted in shea e sinila ly the transfer dii k- Fie- 5 the c si g and ext nd thro h p se e i the inner and outer plates 2 and 3. At its inner end the plug is providedrwith a longitudinal slot 12 in which the arms of the member 8 may move back and forth and.

with a transverse slot 13 adapted to receive thekey 14. When the key is transferred to this slot and the plug forcedinwardly the edge of the key bears against the inclined end 10 of the arm 10 operating the irregularly shaped member 8 to the right as shown in Fig. 7 and releasing the dog 7, thereby unlocking the reciprocating rod 6 for further operation.

The cover plate 2, adjacent the plug 11, is formed with an inward projection 15 making a circular depression 16 in the front side of the plate. Through the cover in this depression, an opening 17 is cut sufficient to permit the insertion or withdrawal of the plug, this opening at one side being substantially rectangular in outline so that the shoulders 18 of the plug may pass therethrough. Shoulders 18 are formed at thejunction of the circular and rectangular portions ofthe plug as shown. A plurality of ribs, three in number, are formedon the cover 2 in the depression 16 and are concentric with the center of the depression. A stud 20 cast integral with the inner plate 2 projects from the center of the depression around which is positioned a transfer plate '21 on its underside having curved grooves 22 adaptedto'receive the ribs 19 heretofore described. The disk is. also formed with a recess 23in one edge of a size to receive the plug 11 and, at a diametrically opposed point, has an, outwardly projecting pin 24:

by means of which it may be manually opera ted about the stud 20. V V

' Between the inner and outer plates 2 and 3 a member '25 substantially circular in outline is positioned being received in the depression 16 above disk 21. It is rigidly connected to the cover 2 by screws. passing throughthe projections 25 and by a screw .26 which passes centrally through the member 25 and into the, stud 20. On its underside this member 25 is provided with projecting ribs 27 circular in outline which seat in grooves 28 formed on the outer surface 7 of the transfer disk '21, it. being understood that the grooves and'ribs are also concentric with the ribs 19 and grooves 22 heretofore described. Through the member 25 a circular opening 29 is cut, the outer end of the plug 11 extending through this opening, the withdrawal of the plug however, being prevented by reason of the stop interposed against the shoulders 18 thereof. An opening 30 is also cut through the disk 29 adapted to pass the key 14 and a curved slot 32 is provided in member25 through which the pin 24 heretofore described extends, the slot permitting a movement of the transfer disk back and forth through an arc' of substan- 36,. the opposite side being provided with two similar curved grooves 37.

In operation when the plug is inserted in thecasing it passes through the recessv23 in the transfer disk 21, thereby holding the disk against movement. WVhen'the plug-is drawn to the position shown in Fig; 8 the shoulders 18 stop it at a point such that the transfer disk 21 may be turned through the slot 13 in the plug. When the disk is turned so that the handle 24 is in the position indicated in Fig. 1 the recess 23 comes in direct conjunction with openings 30 and'31.' A

key 14 may now be inserted and is guidedby the projection 31 so that the slots 36 thereof receive the ribs 19, the key entering into the recess 23 of the transfer disk. .By turningthe disk through a partial revolution or untilthe operating pin 24 is' carried to the end of the slot opposite that shown in Fig.

1, the key is carried into the slot 13 of the plug 11 and'may be transferred with the plug inwardly to perform its function by engaging against the incline 1O of the arm 10 as heretofore described. 7 r r 7 From the foregoing it willbe apparent that I have provided-a novel and useful transfer meansfor carrying unlocking keys to operative position and one which will insure. against the use of any except keys of a particular construction. The guiding ribs 19 and 27 and the guiding projection 81 render it imperative that the key shall have a special construction and, the transfer mechanism described, including the grooves transfer disk and the associated ribs 19 and 27 entering said grooves, render it impossible to use any other type of key. V

I claim I V 1. In combination, an inclosing casing, a plug havinga transverse slot between its ends movably 'mounted in the casing and adapted'to be projected a distance outside the casing with the slot in the plug located within and adjacent a side of thecasing, and a transfer means movably mounted within said side of the casing in association with the plug, and adapted toreceive a key from Without the casing and carry it to the slot in said plug. 1 r

2. In combination, an inclosing casing, a plug; having a transverse slot movably iting the outward movement of the'plug, a

transfer disk rotatably mounted on the casing and having a recess at one side through which the plug passes, thereby holding the disk against rotation except when the plug is moved with its slot lying-in the same plane as the disk and means covering the transfer disk having openings leading from without the casing to the disk for the insertion of a key into the recess in the disk, substantially as described. I

3.-In combination, a casing, a cover for one side thereof, a transfer disk rotatably mounted on the cover having a recess at one edge thereof, a plug having a transverse slot movably mounted in the casing passing through the cover and the recess of the disk, means covering the disk, means on said means stopping the outward movement of the plug with the slot thereof in the same plane as the disk, means to manually rotate the transfer disk, and means permitting the insertion of a key in the recess of the transfer disk when rotated away from its normal position, substantially as described.

4. In combination, an inclosing casing, a plug having a transverse slot therein mounted in the casing and adapted to be projected a distance outside the casing with the slot in the plug located adjacent one side of the casing, a transfer disk rotatably mounted adjacent the plug having a recess through which the plug passes, and means covering the transfer disk, said means having an opening to permit the entrance of a key into the recess in the disk when the plug is-projected outwardly to permit the rotation of the disk through the slot thereof.

5. In combination, a casing, a cover for the casing, a transfer disk having a recess at one edge mounted on the cover, a member attached to the cover over the transfer disk, a sealing plate secured over the cover and said member, the member and cover having registering openings leading to the transfer disk, means to turn the transfer disk about its center as an axis, and a plug having a transverse slot mounted in the casing and extending through the cover, sealing plate and member between them and positioned in, the recess in the transfer disk.

6. In combination, a casing, a cover for the casing having a depression therein, a transfer disk rotatably mounted in the depression, said disk having a recess at one edge, a member secured to the cover and seating in the depression over the transfer disk, a sealing plate over the cover and said member, the sealing plate and member hav ing registering openings leading to the transfer disk, means to turn the transfer disk from without the casing, and a plug having a transverse slot mounted in the casin g and extending through the cover, sealing plate and the member between them and positioned in the recess in the transfer disk.

7. In combination, a casing, a cover for the casing having a substantially circular depression therein, a circular transfer disk in the depression mounted to turn about its center as an axis and having a recess at one edge, a member secured to the cover and seating in the depression above the transfer disk, said member having a circular opening therethrough, a projection extending into the opening, a sealing plate over the cover and member provided with an opening registering with the opening in said member, an operating handle on the transfer disk extending through slots in said member and sealing plate, and a plug having a transverse slot mounted in the casing with an end extending through the cover, sealing plate and the member between them and posi tioned in the recess in the transfer disk.

8. In combination, a casing. a cover for the casing having a substantially circular depression therein, a circular transfer disk in the depression mounted to turn about its center as an axis and having a recess at one edge and concentric grooves in both sides thereof. a member secured to the cover seating in the depression above the transfer disk having a circular opening therethrough, a projection extending into the opening, concentric ribs on the member seating in grooves on one side of the transfer disk, similar concentric ribs on the cover plate seating in grooves on the other side of the transfer disk, a sealing plate over the cover and member provided with an opening communicating with the opening in the member, an operating handle on the transfer disk extending through slots in the member and sealing plate, and a plug having a transverse slot mounted in the casing with an end extending through the cover, sealing plates and the member between them and positioned in the recess of the transfer disk.

In testimony whereof I afiix my signature in presence of two witnesses.

YVILLIAM E. ELLIOTT.

Witnesses:

FRANK E. LIVERANCE, Jr., H. H. YARRINGTON.

Gogies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

